Remove irrelevant Chromium flag data for CanvasRenderingContext2D API (#12900)
Remove irrelevant Chromium flag data for CanvasRenderingContext2D API (#12900)

This PR removes irrelevant flag data for Chromium (Chrome, Opera, Samsung Internet, WebView Android) for the `CanvasRenderingContext2D` API as per the corresponding [data guidelines](https://github.com/mdn/browser-compat-data/blob/main/docs/data-guidelines.md#removal-of-irrelevant-flag-data).

This PR was created from results of a [script](https://github.com/queengooborg/browser-compat-data/blob/scripts/remove-redundant-flags/scripts/remove-redundant-flags.js) designed to remove irrelevant flags.
chrisdavidmills/browser-compat-data,mdn/browser-compat-data,mdn/browser-compat-data,chrisdavidmills/browser-compat-data